1.

The magnetic induction at p for the arrangement shownin when tow similar short magnets of magneticmoment M are joinedat the middle so that they are mutually perpendicualr will be

Answer»

`(m_(0))/(4PI)(msqrt(3))/(d^(3))`
`(mu_(0))/(4pi)(2M)/(d^(3))`
`(mu_(0)msqrt(5))/(4pid^(3))`
`(mu_(0)2m)/(4pid^(3))`

SOLUTION :In given two magnetsare perpendicular to each other
`therefore B=(mu_(0))/(4pir^(3))sqrt(4+1)=(mu_(0)M)/(4pid^(3))sqrt(5)`


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